Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Cathode Ray ·CathodeRay

16AOP4

Sixteen-inch aluminized P4 picture tube with electrostatic focusing and magnetic deflection. The white medium-short-persistence screen and wide 114-degree deflection operate around 14 kV, providing a compact high-voltage direct-view television display.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
NEOEIGHTAR7
Base pins
-
Nominal heater
6.3 V / 600 mA

Description

The Sylvania 16AOP4 is a 16-inch 114-degree aluminized P4 television CRT with bonded safety shield, electrostatic focus, and magnetic deflection.

Socket description

Small-button Neoeightar 7-contact CRT base family

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
NEOEIGHTAR7
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
600 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Cathode Ray

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Wide-angle television CRT electron-gun/display section.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

  • Heater Voltage

    6.3 V

  • Heater Current

    600 mA

  • Focusing Method

    Electrostatic text

  • Deflection Method

    Magnetic text

  • Fluorescence

    White text

  • Persistence

    Medium Short text

  • Phosphor

    Aluminized P4 text

  • Deflection Angle

    114 deg

    Diagonal

  • Light Transmittance

    60 percent

    Approximate

Other

  • Maximum Anode Voltage

    18000 V

    GridDriveOrCathodeDrive

  • Minimum Anode Voltage

    10000 V

    GridDriveOrCathodeDrive

  • Focus Voltage Minimum

    -550 V

    GridDrive; Grid4

  • Focus Voltage Maximum

    1100 V

    GridDrive; Grid4

  • Maximum Grid2 Voltage

    550 V

    GridDrive

  • Anode Voltage

    14000 V

    GridDrive

  • Focus Voltage Minimum

    0 V

    GridDrive; Grid4

  • Focus Voltage Maximum

    400 V

    GridDrive; Grid4

  • Grid2 Voltage

    300 V

    GridDrive

  • Grid1 Cutoff Voltage Minimum

    -70 V

    GridDrive

  • Grid1 Cutoff Voltage Maximum

    -33 V

    GridDrive

  • Cathode Cutoff Voltage Minimum

    31 V

    CathodeDrive

  • Cathode Cutoff Voltage Maximum

    57 V

    CathodeDrive

  • Maximum Grid1 Circuit Resistance

    1.5 Mohm